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公开(公告)号：US20150288536A1
公开(公告)日：2015-10-08
申请号：US14743715
申请日：2015-06-18
IPC分类号： H04L12/437 , H04L12/703 , H04L12/427 , H04L12/26
CPC分类号： H04L12/437 , H04L12/427 , H04L43/0811 , H04L45/18 , H04L45/28
摘要： In one embodiment, micro-loops are avoided in ring topologies of packet switching devices by changing the order of propagation of link state information concerning failed communications between a particular packet switching device and a neighbor packet switching device. In one embodiment, the particular packet switching device communicates link state information of a high cost of the particular communications (e.g., in the direction from particular to neighbor packet switching devices) such that this link state information will propagate towards the particular packet switching device from at least from the furthest packet switching device in the ring topology that is currently configured to forward packets having a destination address of the neighbor packet switching device through the particular packet switching device.
摘要翻译： 在一个实施例中，通过改变关于特定分组交换设备和相邻分组交换设备之间的故障通信的链路状态信息的传播顺序来避免分组交换设备的环形拓扑中的微环路。 在一个实施例中，特定分组交换设备传送特定通信的高成本（例如，从特定到相邻分组交换设备的方向）的链路状态信息，使得该链路状态信息将向特定分组交换设备传播 至少来自当前配置为通过特定分组交换设备转发具有相邻分组交换设备的目的地地址的分组的环形拓扑中的最远分组交换设备。
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公开(公告)号：US08238232B2
公开(公告)日：2012-08-07
申请号：US11968499
申请日：2008-01-02
摘要： A method is described of constructing a transition route in a data communication network having as components nodes and links. Upon receipt of a transition notification identifying a first component a non-neighboring node constructs a transition route around the first component. In an embodiment, a node performs detecting the first component transition; issuing a transition notification identifying the first component and recognizable by nodes configured to construct a transition route around the first component; and upon expiry of a notification transition period, issuing a transition advertisement recognizable by all nodes on the network.
摘要翻译： 描述了在具有节点和链路的组件的数据通信网络中构建转换路由的方法。 当接收到标识第一组件的转换通知时，非相邻节点构成围绕第一组件的转换路径。 在一个实施例中，节点执行检测第一分量转换; 发出标识所述第一组件的转换通知，并且可被被配置为围绕所述第一组件构建转换路径的节点识别; 并且在通知转换期限届满时，发布由网络上的所有节点可识别的转换广告。
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公开(公告)号：US07920566B2
公开(公告)日：2011-04-05
申请号：US11788106
申请日：2007-04-18
IPC分类号： H04L12/28
CPC分类号： H04L45/22 , H04L45/02 , H04L45/28 , H04L45/50 , H04L45/507
摘要： An apparatus for forwarding data in a data communications network having as components nodes and links therebetween is described. The apparatus is arranged to forward data towards a destination on a label switched path and advertise in a label advertisement to nodes in the network in a label advertisement its label for the label switched path and its label for a repair label switched path for use in the event of non availability of a component in the network. The apparatus is further arranged to advertise to a remote node in the network in a label advertisement additional information for deriving repair label switched path information at the remote node.
摘要翻译： 描述了一种用于在数据通信网络中转发数据的装置，其具有作为其间的节点和链路的组件。 该设备被布置为在标签交换路径上向目的地转发数据，并且在标签广告中向标签广告中的节点通告标签公告其标签交换路径的标签及其用于维护标签交换路径的标签 网络中组件不可用的事件。 所述装置还被布置为在标签广告中向网络中的远程节点通告用于在远程节点处导出修复标签交换路径信息的附加信息。
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4.发明授权Constructing repair paths around multiple non-available links in a data communications network 有权围绕数据通信网络中的多个不可用链路构建修复路径公开(公告)号：US07852751B2
公开(公告)日：2010-12-14
申请号：US12032274
申请日：2008-02-15
IPC分类号： H04L12/26
摘要： A data processing apparatus is configured for initiating a not-via approach for creating repair path information for a first link between the first network node and a second network node; creating a list of other network nodes that the not-via repair path traverses; creating and storing entries in the FIB identifying repair addresses for the network nodes and that cause (a) packets directed to all addresses normally reachable through the first link to be encapsulated to the second node not via the first node, (b) packets directed to a not-via address that is normally reachable through the first link to be encapsulated to the second node not via the first node, and (c) dropping packets directed to a not-via address that is normally reachable through the first link when the not-via address is in the list; repeating the preceding steps for all other links of the first network node.
摘要翻译： 数据处理装置被配置为启动用于为第一网络节点和第二网络节点之间的第一链路创建修复路径信息的非通路方法; 创建非通路修复路径穿过的其他网络节点的列表; 创建和存储FIB中的条目，以识别网络节点的修复地址，并导致（a）指向通过第一链路正常可到达的所有地址的分组，而不是经由第一节点封装到第二节点;（b）指向 通常可通过第一链路到达不通过第一节点封装到第二节点的非通过地址，以及（c）丢弃通过第一链路正常可到达的非通过地址的分组， -via地址在列表中; 对第一网络节点的所有其他链路重复前述步骤。
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公开(公告)号：US09942057B2
公开(公告)日：2018-04-10
申请号：US14743715
申请日：2015-06-18
IPC分类号： H04L12/437 , H04L12/705 , H04L12/703 , H04L12/427 , H04L12/26
CPC分类号： H04L12/437 , H04L12/427 , H04L43/0811 , H04L45/18 , H04L45/28
摘要： In one embodiment, micro-loops are avoided in ring topologies of packet switching devices by changing the order of propagation of link state information concerning failed communications between a particular packet switching device and a neighbor packet switching device. In one embodiment, the particular packet switching device communicates link state information of a high cost of the particular communications (e.g., in the direction from particular to neighbor packet switching devices) such that this link state information will propagate towards the particular packet switching device from at least from the furthest packet switching device in the ring topology that is currently configured to forward packets having a destination address of the neighbor packet switching device through the particular packet switching device.
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公开(公告)号：US09350639B2
公开(公告)日：2016-05-24
申请号：US11851255
申请日：2007-09-06
IPC分类号： H04L12/26 , H04L12/70 , H04L12/24 , H04L12/701 , H04L12/707 , H04L12/703 , H04L12/723
摘要： In an embodiment, an apparatus for forwarding data in a data communications network having as components nodes and links therebetween comprises a network interface configured to couple to a data communications network having as components nodes and links therebetween; first logic which when executed is operable to receive a repair address; second logic which when executed is operable to compute a repair path from a repairing node to the repair address around a failure component on a primary forwarding path between the apparatus and a repairing node; and third logic which when executed is operable to propagate the repair address along a label switched path (LSP), comprising the repair path, to the repairing node. The apparatus offers improved efficiency in computing a repair path in a network around a failed component because unnecessary computations are not performed with the disclosed apparatus and approach.
摘要翻译： 在一个实施例中，一种用于在数据通信网络中转发数据的装置，具有作为其组件的节点和链路之间的组件，包括被配置为耦合到数据通信网络的网络接口，所述数据通信网络具有作为其间的 第一逻辑，当执行时可操作以接收修复地址; 第二逻辑，其被执行时可操作以计算从修复节点到设备与修复节点之间的主转发路径上的故障组件周围的修复地址的修复路径; 以及第三逻辑，其在执行时可操作以沿着包括修复路径的标签交换路径（LSP）将修复地址传播到修复节点。 该设备提高了在故障组件周围的网络中计算修复路径的效率，因为不会用所公开的设备和方法进行不必要的计算。
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公开(公告)号：US20130088974A1
公开(公告)日：2013-04-11
申请号：US13269617
申请日：2011-10-09
CPC分类号： H04L12/437 , H04L12/427 , H04L43/0811 , H04L45/18 , H04L45/28
摘要： In one embodiment, micro-loops are avoided in ring topologies of packet switching devices by changing the order of propagation of link state information concerning failed communications between a particular packet switching device and a neighbor packet switching device. In one embodiment, the particular packet switching device communicates link state information of a high cost of the particular communications (e.g., in the direction from particular to neighbor packet switching devices) such that this link state information will propagate towards the particular packet switching device from at least from the furthest packet switching device in the ring topology that is currently configured to forward packets having a destination address of the neighbor packet switching device through the particular packet switching device.
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8.发明授权Method and apparatus for constructing a repair path around a non-available component in a data communications network 有权用于构建数据通信网络中不可用组件周围的修复路径的方法和装置公开(公告)号：US07885179B1
公开(公告)日：2011-02-08
申请号：US11393166
申请日：2006-03-29
CPC分类号： H04L12/4633
摘要： A method of constructing a repair path around a non-available component in a data communications network is described. The data communications network has, as components, nodes and links therebetween defining a network topology. The non-available component is a member of a shared risk group of components commonly renderable non-available. The method comprises the step, performed at a repairing node, of identifying as a repair target a neighbour component of the non-available component. The method further comprises the step of constructing a repair network topology omitting the shared risk group. The method further comprises the step of constructing a repair path to the repair target in the repair topology.
摘要翻译： 描述了在数据通信网络中围绕不可用组件构建修复路径的方法。 数据通信网络具有作为组件的节点和链路，其间定义网络拓扑。 不可用组件是通常不可用的组件的共享风险组的成员。 该方法包括在修复节点执行的将不可用组件的相邻组件标识为修复对象的步骤。 该方法还包括构建省略共享风险组的修复网络拓扑的步骤。 该方法还包括在修复拓扑中构建到修复目标的修复路径的步骤。
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9.发明授权Method and apparatus for forwarding a tunneled packet in a data communications network 有权在数据通信网络中转发隧道化分组的方法和装置公开(公告)号：US07864708B1
公开(公告)日：2011-01-04
申请号：US10620866
申请日：2003-07-15
IPC分类号： H04L12/28
CPC分类号： H04L12/4633 , H04L45/22 , H04L45/28 , H04L45/50
摘要： A method is described for forwarding a tunneled packet in a data communications network. A header of the tunneled packet is removed at a forwarding node neighboring the tunnel end point, and the payload is forwarded.
摘要翻译： 描述了用于在数据通信网络中转发隧道化分组的方法。 在与隧道终点相邻的转发节点处去除隧道化分组的报头，并且转发有效载荷。
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公开(公告)号：US07835312B2
公开(公告)日：2010-11-16
申请号：US11186449
申请日：2005-07-20
CPC分类号： H04L45/22 , H04L45/02 , H04L45/023 , H04L45/28 , H04L45/50
摘要： A method of updating a label-switched path for forwarding data in a data communications network in response to a change in a network comprises the step, performed at an updating node of receiving notification of a network change, of constructing a post-change label-switched path in the changed network. The method further comprises, after termination of a first period, forwarding data using the post-change label-switched path.
摘要翻译： 响应于网络的变化而更新用于在数据通信网络中转发数据的标签交换路径的方法包括在接收网络变更通知的更新节点处执行的构建改变后标签 - 改变的网络中的交换路径。 该方法还包括在第一时段终止之后使用改变后标签交换路径转发数据。
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